Headset



FIG. 1 is a side view of the headset.

FIG. 2 is the other side view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is the top side view thereof.

FIG. 5 is a side perspective view thereof.

FIG. 6 is a end view thereof; and,

FIG. 7 is a other end view thereof.

The broken lines form no part of the claimed design. 

The ornamental design for a headset, as shown and described. 